OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application) Z$ G5 @# E E2 I& A. C4 @- B9 u/ i! w
/*
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* edma_test.c7 t$ A9 p I O) v$ ~1 G3 M7 P X
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* brief EDMA3 Test Application- N+ P# b9 O3 v; D1 m: |
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* This file contains EDMA3 Test code., z8 l* K: _ A6 q3 j( f' ~
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; t8 S3 R& r2 H2 ^3 R( d0 h
* TO CHANGE.3 [' b/ o1 s! m. x$ E+ e& o
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/- I' D5 m# ?0 ?1 z* r9 M
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as2 o2 w4 h6 C; H* H. x8 t3 V
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty4 z8 s% W8 b3 n
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.2 K" e* b5 O0 v u
*/
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#include <linux/module.h>; \/ i" B5 [: j
#include <linux/init.h>: e( T0 }7 M% S( V# e# F
#include <linux/errno.h>; j- I( y7 T+ a' B& }/ Z
#include <linux/types.h>% S; G9 u: C7 N6 U& c. m
#include <linux/interrupt.h>
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#include <asm/io.h>' k7 q# N4 ~2 q) x& B
#include <linux/moduleparam.h>* N L8 x$ b/ e b3 R8 i6 w W; {
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>6 }2 s+ p- f6 x b
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG/ E$ U, j6 h, k0 ?
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)9 g, f* b7 d0 G! R. H+ I) r/ \4 P
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN! R$ J2 s, ?5 d9 j7 r7 I6 z$ ?
#define DMA_FN_OUT6 E: q# f L4 I" ~: s: ~
#endif; [( Y+ B- K" \4 v H" X" `
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( k2 Q. h# d9 B) [9 d% G8 Y7 I
#define STATIC_SHIFT 3, I) @) n' s R8 d4 X4 b
#define TCINTEN_SHIFT 206 m) L0 X( j f7 f( T! [) }+ R
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 234 u( w, J n& c9 X) i
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static volatile int irqraised1 = 0;# y: B! s5 c! p' Y% h+ ~
static volatile int irqraised2 = 0;4 V K2 R( Y% a/ _- R$ u, b
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' v! T) A1 a, k9 p/ P
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& E. f. @8 M2 V; s& l% a
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% i$ w- ~' M8 j- a: p
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dma_addr_t dmaphyssrc1 = 0;; o' o/ I& ]( E' y% h4 G+ h3 Q" E
dma_addr_t dmaphyssrc2 = 0;/ B r% y; E* @8 [( X! E3 C& ~: }
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;9 @, D& m1 Y' a
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;3 i. |; q% T( ?$ l# F
static int ccnt = 8;: X7 f1 K& O, [- W5 w. g% h
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module_param(acnt, int, S_IRUGO);5 P# E- ~9 a9 B9 u) k& H' f2 Y2 A
module_param(bcnt, int, S_IRUGO);. G+ u: p% K- u% t0 w
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动